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IBM Data and AI Ideas Portal for Customers

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Status Future consideration
Workspace Spectrum LSF
Components Other
Created by Guest
Created on Mar 25, 2023

Provide ability to dump sequence of jobs ids considered by LSF scheduler for dispatch during a dispatch cycle

An old job which is pending in LSF may continue to remain pending with the reason "Individual host based reasons" while newer jobs continue to get scheduled. This may happen due to queue priority and fairshare settings.

When running 'badmin diagnose' on such a job, it details the reason for the job pending with various per host reasons. However, there is no mention of whether the job was bumped down in priority while considered for scheduling.

Currently there is no way to debug fairshare as the cause for job pending as the job eventually get considered for dispatch and there will not be sufficient resources left to dispatching it.

Pending jobs is one of the biggest pain points for user running their jobs and inability to determine accurate pending reason cripples us to determine what action to take. Often it comes down to experience & guess work when solving jobs pending due to fairshare.

To help with above scenario, having an ability to list the sequence in which jobs (along with the queue & fairshare related details) were considered during dispatch cycle(s) would help determine if the job is pending for long time due to queue priority & fairshare settings.

Needed By Quarter